My Electromagnetic Hypersensitivity (EHS) appeared to be caused by blood clots in the brain which had to be flushed out to cure it. The mystery was why I had the blood clots there, which recently was solved by the medical profession as I have a hole in my heart that creates them. It is estimated that 25% of the population have a hole in their heart and Atrial Septal Defect (ASD) may be one of the triggers for the onset of EHS in a person.